Socket-shell.



PATENTED JAN. 14, 1908.

H. HUBBELL. SOCKET SHELL.

APPLICATION FILED MAR..5. 1907.

2 SHEETS-SHEET 1.

M M V W 7? W B Z 2 0 u: 0O 2 7 7 6 2 2 S w W E S S M %w .No. 876,552. PATENTED JAN-.14, 1908 H. HUBBELL.

SOCKET SHELL. APPLICATION FILED MAR. 5. 1907.

' 2 SHEETS-SHEET 2.]

IIIIIIE WITNESSES [Q lNVENTOf? up I rrnrran sira'rns HARVEY HUBBELL,' OF BRIDGEPORJ, CONNECTICUT.

SOCKET-SHELL.

Specification of Letters Patent.

Patented Jan. 14, 1908.

Application filed March 5, 1907. Serial No. 36058 T 0 all whom it may concern:

Be it known that l, HARVEY HUBBELL, a citizen of the United States, residing at Bridgeport, county of Fairlield, State of Connecticut, have invented a new and useful Socket-Shell, of which the following is aspecification. i

This invention has for its object to provide a light and inexpensive electric socket shell comprising members attached together by means of interlocking threads, one of said members being provided with a guide collar which shields and retains the edge of the other member, thus providing a shell of this character which shall be neat and attractive in appearance as there are no projecting screws, the parts of which. may be easily and quickly attached and detached and will remain se,

' tion with the accompanying drawings is a specification, reference characters being used to indicate the several parts:

Figure 1' is an elevation, partly broken away, illustrating one form of my novel socket shell; Fig. 2 a section on the line 2 2 in Fig. 1, looking in the direction of the arrows; Fig. 3 a longitudinal section of one of the members, illustrating a variant form of construction; Fig. et a view similar to Fig. 1, illustrating another form of the invention;

and Fig. 5 is a plan view of the lower member as seen in Fig. 4.

10 and 15 denote the members of the shell. Member 10 is of ordinary configuration, the essential feature being that it is provided at its meeting edge with a rolled thread indicated by 20. This member is provided with the usualslot indicated by 21 to receive the shank of a key (not shown) and with the usual insulating lining indicated by 2'3. In the form illustrated in Figs. 1 and 1., this member is shown as pro\ idcd with a cirrum- Member 1:)

ferential bead indicated by 23;. is provided at its mccling cdgc with it rolled thread, indicated by 2-.l which in the lirsi iorm passes within and engages the rorrcspending thread on member 10. This memher is also .provided with the usual insulating lining indicated by 25. 26 denotes a guide collar on member 15 in this form of greater diameter than thread 2 so that a space, in-v dicatcd by 27, is left between the guide collar and the thread which just receives thread 20 on member 10. The guide collar is shown as extending up to bead 23 on member 10, thus making an invisible joint between the members, the threads of both members being wholly concealed and all the outer end of slot 21 being covered, leaving an opening at the inner end of said slot just large enough to re ceive the shank of a key (not shown).

The width of the guide collar is of course not an essential feature of the invention. If preferred, this collar may be made narrower leaving the upper portion of thread 24 on member 10 exposed. in use, the guide collar acts to shield the slotted lower end. of member 10 and. retain it in place, thus enabling me to make a strong and durable socket from relatively light sheet metal.

Collar 26 may be provided with an inwardly turned flange 28, as in F ig. 3, and the llangc may be soldered to the member at the base of the thread, or if preferred member 5 may be provided with a circumfcrential bead 29 as in Fig. 1, and the collar may be secured in place by rolling a groove, as at 30,-in the collar above the bead and rolling the lower edge of the collar about thc head, as is clearly shown in Fig. 1.

The form illustrated in Figs. 4 and 5 diflcrs from the lirst form in that the guide cob lar, which in this form is specifically indicoded by 31, is placed upon the inner side of thread 31 instead of extcriorly thereto, a space 27 being left between the thrcml and the collar as before. The operation is precisely the same as before, the only difference being that in the "first form the threads are wholly or partly conccalcd and in the second form the thread upon member 15 is wholly exposed. in bothv forms the slotted lower end of member .10 rcceivml and in closed between the thrczul on member 15 and the guide collar which serves as ashicld, so that the threads musl- Lcccssarily engage when the members are turned together. in Fig. 1, guide collar 31 is shown as retained in place by mcans of an out. ardlyturncd i llnngc 3'2 which cl sely engages a groove 33 i in member 15.

Having thus described my invention I claim:

1. A socket shell comprisng members having interlocking threads, one of said members being provided with a guide collar separated from its threaded portion by an annular space to receive the other member.

2. A socket shell member provided upon one edge with a thread and contiguously' thereto with a guide collar, leaving a space between said thread and collar, substantially as described, for the purpose specified.

3. A socket-shell member provided upon one edge with a thread and with a guide collar lying exteriorly to the thread. leaving a space between said thread and the collar, substantially as described, for the purpose specified.

4. A socket shell comprising members erases having interlocking threads, one of said members being provided with a guide collar lying exteriorly to the thread, and separated therefrom by an annular space receiving the other member.

5. A socket shell comprising members having interlocking threads, one of said members being provided with a guide collar separated from its threaded portion by an HARVEY HUBBELL.

Witnesses:

A. M. Woosrnn, S. W. ATHERTON. 

